John Clark Howat (January 22, 1918 – October 30, 2009) was an American film and television actor.

His later credits include The Doctor and the Girl, Customs Agent, Airport,[5] My Blue Heaven and California Passage, among others.

In 1956, Howat played the main role of "Dr. Jack (John) Petrie" in the short-lived sitcom television series The Adventures of Dr. Fu Manchu.

[10][11] He also appeared in Dragnet, Leave It to Beaver, Highway Patrol, Alfred Hitchcock Presents, Navy Log, Tales of Wells Fargo, Bat Masterson and The Millionaire.

[6][7] He also wrote the episode "Walk a Crooked Line" for the crime drama television series The Detectives,[9] in 1962.